Belt-shifter.



E. K. MORGAN.

BELT SHIFTER.

APPLlCATION FILED Nov. 5. 191 s.

Patented Apr. 18, 1916.

Tm: COLUMBIA PLANoGnAPIi c0, WASHINGTON, u. c.

TTNTTEM dTdiTEd EVERETTE K. MORGAN, 0F ROCKFORD, ILLINOIS, ASSIGNOR 'IO ROCKFORD DRILLING MACHINE COMPANY, OF ROCKFORD, ILLINOIS, A CORPORATION OF ILLINOIS.

BELT-SHIFTER.

Application filed November 5, 1915.

To all whom-it may concern:

Be it known that I, Evnnn'rrn K. MORGAN, a citizen of the United States, residing at Rockford, in the county of Winnebago and State of Illinois, have invented certain new and useful Improvements in Belt-Shifters, of which the following is a specification.

This invention is designed for use primarily in connection with stepped cone pulleys; and the object of the invention is to automatically shift the belt step by step on each of two companion pulleys, and to make adequate provision for initially securing the necessary slack by partially stepping down the belt at one end before bringing the companion shifting lever into position to step the belt up at the other end. In other words, the companion shifting levers automatically act in succession, rather than simultaneously, to effect each shifting movement.

The mechanism of the present invention is designed to easily and automatically effect the results above noted, and to afford a safe and convenient mechanism which can be operated by hand from any convenient position.

In the drawings: Figure 1 is a side elevation of the belt shifting mechanism of the present invention; and Fig. 2 is an edge elevation of the same.

The shifting mechanism of the present invention is applied to a bracket frame 3, which, as shown, serves as a mounting for upper and lower pulley shafts 4 and 5 respectively, which mount stepped pulley wheels 6 and 7 respectively, although obviously the invention can be mounted upon any suitable support which is afforded by the machine or appliance for which the belt shifting mechanism is intended.

The shifting of the upper and lower ends of the belt is effected by means of an upper belt shifting arm 8 and a lower belt shifting arm 9, each of angular formation, as shown, and each mounted at the bend or angle upon a pivot 10.

Since it is desirable to position the outer or acting ends of the arms on opposite sides of the bracket frame 3, the lower arm is offset through the pivot 10 to lie behind the frame, as shown in Fig. 1. The inner end of each of the arms is provided with a roller bearing 11, which operates within a vertically Specification of Letters Patent.

Patented Apr. 1d, 191%., Serial No. 59,807.

arranged slot 12 in an ear 13 outstanding from an adjusting bar 14, which is slidably mounted in any suitable manner to move transversely across the face of the bracket frame 3, and is provided at one end with a handle 15 adapted to be grasped by the operator.

The adjusting bars 14 lie in parallel relation above one another, and are adapted to be moved successively by means of a link section 16, which, as shown, is pivoted to the lower adjusting bar 14, and is provided at its upper end with a slot 17, which receives a pin or roller 18 outstanding from the face of the upper adjusting bar.

In operation, with the parts in the posi tion shown in F ig. 1, the operator, by grasping the lower adjusting bar 15 and thrust- 111g it inwardly toward the right, would act to impart an immediate inward movement of the inner end of the lower or clownstepping shifting arm, which would initially serve to partially down-step the belt from the larger pulley and thereby slacken the belt in preparation for the up-stepping of the upper end of the belt. A continued movement of the lower adjusting bar would exhaust the play afforded by the slot 17 in the link 16, so that thereafter the upper adjusting bar would be moved by reason of its connection with the lower adjusting bar, and this would impart a deferred up-stepping movement to the slackened belt. Thereafter, if it is desired to reverse the stepping of the belt, the operator can effect a similar result by drawing back the upper adjusting bar 14:, which would cause an initial down-stepping of the upper end of the belt and a deferred lip-stepping of the lower end of the belt after sufficient slack had been secured.

The invention is one which renders the operation of adjusting the belt entirely automatic, and affords a very convenient and easily operated means for securing the intended result.

I claim:

1. In belt shifting mechanism, in combiof the down-stepping shifting arm prior to a movement of the up-stepping shifting arm, substantially as described.

'2. In belt shifting mechanism, in combinationcwithi oppositely arranged cone pulleys, a pivoted shifting arm for each of the ulle s an ad'ustin member for each arm 1 7 z: a

and a slotted link connection between said adjusting mechanisms, designed to afford sufficient 10st motion to. permit an initial movement of the down-stepping shifting arm; prior to a movementof theup-stepping shifting arm, substantially as described.

3. In belt shifting mechanism, in combination With oppositely arranged cone pulleys, a pivoted shifting arm for each of the pulleys, an adjusting bar for each of the shifting arms, movable transversely With respect'to theinner end of the arm and provided With a slotted extension engaging the inner end of the arm, and a connection between the two adjusting bars, slotted t0 afford suflicient lost motion to permit of an initial movement of the down-stepping Copies ofthis pat ent may be obtained for shifting arm prior to a movement of the rip-stepping shifting arm, substantially as described.

4:. In belt shifting mechanism, in combi-' nation With oppositely arranged cone pulleys, a shifting arm for each of the pulleys pivoted intermediate of its length, a slidably mounted adjusting bar for each of the shifting arms, said bars being arranged in parallelism-to oneanother and in proximity to the inner ends of the respective arms, and being each provided with a slot adapted to engage the inner end of the arm, and a slotted link connection between the two adjusting bars for affording sufficient lost motion to permit of a movement of the down-stepping shifting arm in advance of the movement of the up-stepping shifting arm, substantially as described.

EVERETTE K. MORGAN.

Witnesses:

GERTRUDE ERICKSON, ADA M. FITZSIMMONS.

five cents each. by addressing the Commissioner 0! Patents, Washington, I). G. 

